Sleipnir!Percy is constantly slipping up and calling Luke βMomβ during his first summer at camp half-blood. Everyone thinks heβs just grieving his (step)mom and let it slide.
by the end of the sea of monsters Quest, Grover, Annabeth and Luke all know heβs Sleipnir, and Grover and Annabeth are also reeling with the knowledge that Luke is the reincarnation of Loki.
Percy again calls Luke βMomβ while theyβre escaping the Princess Andromeda and Annabeth freaks out because βWait, heβs your mom???β Grover is getting motion sickness because riding on Sleipnirβs back without a saddle or bridle is not pleasant, and he is faster than any other horse in existence.
Percy is just πππ€ he wasnβt exactly hiding it. Why are they all acting like this is some huge revelation?